71068289 has 2 divisors, whose sum is σ = 71068290. Its totient is φ = 71068288.

The previous prime is 71068271. The next prime is 71068297. The reversal of 71068289 is 98286017.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56130064 + 14938225 = 7492^2 + 3865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71068289 is a prime.

It is not a weakly prime, because it can be changed into another prime (71064289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35534144 + 35534145.

It is an arithmetic number, because the mean of its divisors is an integer number (35534145).

Almost surely, 2^71068289 is an apocalyptic number.

It is an amenable number.

71068289 is a deficient number, since it is larger than the sum of its proper divisors (1).

71068289 is an equidigital number, since it uses as much as digits as its factorization.

71068289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 71068289 is about 8430.2010059073. The cubic root of 71068289 is about 414.2144893523.

The spelling of 71068289 in words is "seventy-one million, sixty-eight thousand, two hundred eighty-nine".